ESP32 Prometheus Exporter for Environment Sensing

The exporter

The service runs on port 80. Fill in WiFi credentials at include/wifi-credentials.h as follows:

const char *ssid = "<your wifi ssid>";
const char *passwd = "<your wifi password>";

This project uses NodeMCU32-S devkit. BME280 communicates with ESP32 over hardware SPI, with CS connected to GPIO5. MH-Z19B communicates with ESP32 over UART, with RX/TX using GPIO17 and GPIO16.

Grafana + Prometheus

A template can be found here.